Here is today’s Bible reading:  1 Samuel 12:1-13:22; John 7:1-29; Psalm 108:1-13;
Proverbs 15:4.

1 Samuel 13:7-11 (NIV)
Saul remained at Gilgal, and all the troops with him were quaking with fear. [8] He waited seven days, the time set by Samuel; but Samuel did not come to Gilgal, and Saul’s men began to scatter. [9] So he said, “Bring me the burnt offering and the fellowship offerings.” And Saul offered up the burnt offering. [10] Just as he finished making the offering, Samuel arrived, and Saul went out to greet him.
[11] “What have you done?” asked Samuel.

Saul panicked.  He walked by sight rather than by faith.  And so, rather than wait on the Lord and His perfect timing, he took matters into his own hands.  The result was tragic.